. equivalent wt

1.. equivalent wt. of HCl when it is treated with with K₂Cr₂O₇

a.36.5 b.>36.5
c.<36.5 d.unpredictable

1 Answers

in the reactant side, the oxidation state of 14 atoms of Cl = -1*14 = -14

in product side, the oxidation state of 14 Cl atoms = -1*8 + 0*6 = -8

change in oxidation state for 14 atoms of Cl = 6 ..

hence, oxidation state change per atom of Cl = 6 / 14 = 3/7 ....

hence, equivalent state of HCl = 7M/3 where M is molecular weight of HCl

because the n-factor is change in oxidation state of the atom in a balanced reaction per atom presentin reactant..

eq. wt = 7*36.5 / 3 = 85.17 ..

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